TY  - BOOK
AU  - Akai,Koichi
AU  - Hayashi,Masao
AU  - Nishimatsu,Yuichi
ED  - International Symposium on Weak Rock
TI  - Weak rock: soft, fractured and weathered rock proceedings of the International Symposium on Weak Rock, Tokyo, 21-24 September 1981 
SN  - 9061912091
PY  - 1981///
CY  - Rotterdam
PB  - A. A. Balkema
KW  - Rock mechanics
KW  - Congresses
N1  - Includes bibliographical references
ER  -